DevTools: add 3D layer view to Layer panel

Source/devtools/front_end/layersPanel.css

Index: Source/devtools/front_end/layersPanel.css
diff --git a/Source/devtools/front_end/layersPanel.css b/Source/devtools/front_end/layersPanel.css
index cc039c2addb509a5347c75e54bd1c8b44482a839..19533cf2edb80ae5e27e91fb48d39c51665b4c6b 100644
--- a/Source/devtools/front_end/layersPanel.css
+++ b/Source/devtools/front_end/layersPanel.css
@@ -1,33 +1,3 @@
-/*
- * Copyright (C) 2013 Google Inc. All rights reserved.

[pfeldman, 2013/08/09 09:24:52]

Copyright is a valuable thing - do not erase it.

- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
 .layers.panel .outline-disclosure {
     z-index: 10;
 }
@@ -40,3 +10,61 @@ div.outline-disclosure > ol {
     position: static;
     padding-left: 12px;
 }
+
+.layers-3d-view {
+    overflow: hidden;
+}
+
+.layers-3d-view .rotating-container {
+    -webkit-transform-style: preserve-3d;
+}
+
+.layers-3d-view .layer-container {
+    position: absolute;
+    opacity: 0.8;
+    border: 1px solid rgba(40, 40, 40, 0.8);
+    -webkit-transform: translateZ(20px);
+    -webkit-transform-style: preserve-3d;
+}
+
+.layer-container .side-wall {
+    position: absolute;
+    background-color: inherit;
+    top: 0px;
+    right: 0px;
+    bottom: 0px;
+    left: 0px;
+    height: 4px;
+    width: 4px;
+    -webkit-transform-origin: 0 0;
+    border: solid black 1px;
+}
+
+.layer-container .back-wall {
+    -webkit-transform: translateZ(-4px);
+    background-color: inherit;
+}
+
+.layer-container .side-wall.top {
+    width: auto;
+    bottom: auto;
+    -webkit-transform: rotateX(-90deg);
+}
+
+.layer-container .side-wall.bottom {
+    width: auto;
+    top: auto;
+    -webkit-transform: translateY(4px) rotateX(-90deg);
+}
+
+.layer-container .side-wall.left {
+    height: auto;
+    right: auto;
+    -webkit-transform: rotateY(90deg);
+}
+
+.layer-container .side-wall.right {
+    height: auto;
+    left: auto;
+    -webkit-transform: translateX(4px) rotateY(90deg);
+}